Thank you for your reply. I guess its just finding a happy medium. I don't want to running marathons. Just be able to do 6 miles like I used to.
Hi
@spence. Yes, I think spot on : it's about finding a happy medium.
If you are hoping to build up to 6 mile runs 3 or more times weekly, then you could probably sensibly start lowering your 1 x daily insulin dose, because this is to become your norm. By how much will depend on your individual metabolism; I might (now I'm getting a better understanding of the effect of exercise and activity on me) try reducing to 75 %, then 50% - keeping a simple log of what I'm trying and what happened.
Since you are dosing 1x daily I presume this is not only a basal slow release insulin, intended to cover you for up to 24 hrs, but probably an inflexible type that doesn't lend itself to frequent changes; ie needing time (perhaps 3 days) to take effect. If you are unsure of the flexibility of daily insulin adjustments you should check with your DSN. He or she would be an appropriate person to ask about your target of 6 mile runs, anyway.
If this is to be a once a weekend 6 mile run, I would be inclined to leave my insulin dosing alone and manage it solely by timing and/or extra carbs. Start a fair bit higher, check when practical and take more carb snacks as needed; I appreciate this sits in contradiction to what
@helli said earlier - it (accidentally) emphasises the point that what works for one person isn't necessarily true for another. We are all different and I don't feel the lethargy that
@helli does when high. If anything, if I'm feeling lethargic I deliberately get active. But I do agree with
@helli about being alert to exercise having an effect on your BG in following days. For me this is irregular, sometimes very little effect the next day and sometimes for the next 3 days; how many days is not particularly obviously related to how active I've been.
I personally wouldn't worry in the slightest about temporarily being high. Either from starting high; or finding that high intensity exercise has created a temporary high surge - a normal consequence of anaerobic exercise; but running without interval training I would normally consider as aerobic exercise. Exercise and medium to high activity will normally bring about a steady reduction in BG, because the exercise reduces your body's resistance to insulin and that then does its stuff mopping up all the excess BG. Hence the tendency to going hypo.
I agree with
@helli that Libre is of limited use at this stage. I have an extra app that converts my Libre into a true CGM, with higher alarm settings. So I get notified very early at any threshold (hyper to hypo) that my BG is falling rapidly and I can choose to ignore or respond to that; as well as having an upper threshold for low glucose - giving me extra time to prevent the low before it gets there. But this digression is for another day!
So, it's all about you finding what works for you. It helps to have some understanding about what is happening or might be about to happen.